History Anyone familiar with "Craveroil"?

Picked up an old inverse oiler (similar to the Marvel Mystery Oiler) back a few years ago...was pretty rough when I first got it, but after some gentle cleaning and new gaskets it looks okay and seems to function properly with MMO.

I've done a pretty exhaustive search and found some late 1920's references to the "Craveroiler" but nothing on the "Craveroil" that's supposed to go into it - anyone know about this stuff?

before 'resto';



after;

 

More info here than you probably wanted. No personal knowlege of the system, but I ran on to this. Hope it helps.

http://www.freepatentsonline.com/1632654.pdf

 

And a picture of the can it came in...

http://www.worthpoint.com/worthopedia/early-craveroil-1-qt-square-oil-tin-can

 

Cool! Wish I had that can to go with it!